Television – Image signal processing circuitry specific to television – Special effects
Patent
1995-07-21
1996-07-09
Metjahic, Safet
Television
Image signal processing circuitry specific to television
Special effects
348426, 348432, 348473, 370 941, H04N 974
Patent
active
055349447
ABSTRACT:
A method of splicing two compressed video signals which have been encoded according to the standard adopted by the Moving Picture Experts Group (MPEG) determines an amount of null information that is to be inserted between the two video signals in order to ensure that an input buffer of an MPEG decoder does not overflow after receiving the spliced video signals. The method allows a splice to occur after any access unit (picture) in the first compressed video signal. The amount of null information is determined from the data rates of the first and second compressed video signals and the amount of new data which is provided to the buffer before the data is retrieved from the buffer for both the first and second video signals. The video signals are spliced by inserting the null information, as sequence stuffing bits into a buffer immediately after the selected picture in the first video signal. The second video signal is transmitted to the buffer immediately after these stuffing bits.
REFERENCES:
"Information Technology--Genetic Coding of Moving Pictures and Associated Audio", ISO/IEC JTC1/SC29/WG11, N0721 rev., pp. 20-26, (Jun. 10, 1994).
"Information Technology--Generic Coding of Moving Pictures and Associated Audio", ISO/IEC JTC1/SC29/WG11 N0702 rev., pp. 149-153 (Mar. 25, 1994).
Egawa Ren
Meyer Edwin R.
Matsushita Electric Corporation of America
Metjahic Safet
West Nina M.
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